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Finding the Fourth Proportional to 67,992.77, 102,005.28 and 66,863.22

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Solution

The fourth proportional to 67,992.77, 102,005.28 and 66,863.22 is: 100,310.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,992.77 : 102,005.28 = 66,863.22 : x
  2. Step 2: Convert to fraction form
    67,992.77/102,005.28 = 66,863.22/x
  3. Step 3: Cross multiply
    67,992.77x = 102,005.28 × 66,863.22
  4. Step 4: Simplify right side
    67,992.77x = 6,820,401,477.80
  5. Step 5: Solve for x
    x = 6,820,401,477.80/67,992.77
  6. Step 6: Final answer
    x = 100,310.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.